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@@ -4,4 +4,8 @@ lens [![Build Status](https://travis-ci.org/jackfirth/lens.svg?branch=master)](h
 
 A Racket package for creating and composing pure functional lenses.
 
+`raco pkg install lens`
+
+`(require lens)`
+
 A lens is a value that can be used to focus on a small subpiece of some larger structure. Given a lens and a value of that larger structure, two values can be dervied: a *view* value, which is the subpiece, and a *context* function, which accepts a new view value and returns a new structure with the old view replaced by the new view. Think of them as composable, pure functional getters and setters. Examples can be found in the documentation.